Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Taxes [Line Items]
Deferred income tax asset - noncurrent	$ 90,872,000	$ 94,536,000
Deferred income tax liabilities - noncurrent	28,067,000	13,442,000
Decrease in deferred tax assets valuation allowance		$ 17,400,000
Tax credits expiration year		2020
Unrecognized tax benefit	21,079,000	$ 14,780,000	$ 14,996,000	$ 13,079,000
Net unrecognized tax benefits that, if recognized, would favorably impact the effective income tax rate	20,000,000	13,000,000
Decrease in unrecognized tax benefits due to the expiration of statutes of limitations and the settlement of various audits		2,000,000
Accrued interest and penalties related to income tax liabilities		2,200,000	2,400,000
Aggregate amount of interest and penalties recorded in the statement of operations		(100,000)	$ 200,000	$ 400,000
Undistributed earning of foreign subsidiaries	252,800,000
Accounting Standards Update 2015-17 [Member] | Scenario Previously Reported
Income Taxes [Line Items]
Deferred income tax asset - current		44,100,000
Deferred income tax liabilities - current		200,000
Accounting Standards Update 2015-17 [Member] | Scenario Adjustment
Income Taxes [Line Items]
Deferred income tax asset - noncurrent		44,100,000
Deferred income tax liabilities - noncurrent		200,000
Foreign Entities
Income Taxes [Line Items]
Deferred tax assets operating loss carry forwards	31,300,000
Deferred tax assets operating loss carry forwards not subject to expiration	$ 30,000,000
Deferred tax assets operating loss carry forwards not subject to expiration, expiration period	10 years
Valuation allowance against the tax benefit associated with NOLs	$ 500,000
Foreign tax credits carryforwards		31,900,000
Valuation allowance against tax credit		$ 10,700,000
Tax credits expiration year		2016
Foreign Entities | Earliest Tax Year [Member]
Income Taxes [Line Items]
Tax years open for audit	2002
Foreign Entities | Latest Tax Year [Member]
Income Taxes [Line Items]
Tax years open for audit	2014
India Tax Authority
Income Taxes [Line Items]
Income tax examination description	The Company's Indian income tax returns covering fiscal years 2002 through 2007 and 2010 through 2013 are under audit by the Indian tax authority.
Domestic federal
Income Taxes [Line Items]
Deferred tax assets operating loss carry forwards subject to expiration	$ 273,700,000
Deferred tax assets operating loss carry forwards expiration year	2017
Valuation allowance against the tax benefit associated with NOLs	$ 0
General business tax credit carryforwards		$ 10,400,000
State and Local Jurisdiction
Income Taxes [Line Items]
Deferred tax assets operating loss carry forwards subject to expiration	$ 12,400,000
Deferred tax assets operating loss carry forwards expiration year	2018
Valuation allowance against the tax benefit associated with NOLs	$ 6,200,000
General business tax credit carryforwards		$ 1,600,000